Toggler Snapskru, 100 Pack, 3/8"-5/8", SP Self Drilling Drywall Anchors With Screw, Does Not Destroy The Drywall When Using The Anchor, Opens With An Audible Pop Locking The Anchor On The Wall, The Drywall Gypsum & Its Paper Are Kept In Compression & Thereby Immediately Reinforced, Prevents Overdriving The Anchor When Using A Screw Gun, Vibration & Shock Resistant.